Figueira Da Foz: Martyna Kubka vs Yeon-Woo Ku

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Active sub-markets

Market context

Polymarket is pricing the Kubka–Ku contract at **0% YES** today, which means the market is effectively assuming Martyna Kubka will not advance against Yeon-Woo Ku on the WTA 125 Figueira da Foz slate. On Polymarket, the outcome is settled through USDC on Polygon via conditional tokens, so the contract only pays out if the match result is determined within the settlement rules; if the match is not played, ends in a tie, or is delayed beyond seven days without a winner, it resolves 50-50.

The market looks like a strong consensus against Kubka when compared with other venues and match listings: FanDuel has the match scheduled for 19 June at 7:00am ET, Tennis.com lists it as a quarter-final in the Figueira da Foz women’s draw, and Fanatics Markets also shows Ku as the 0% favourite. That kind of alignment usually matters more than any single implied price, because prediction markets on lower-tier WTA events can gap sharply when the draw, timing, or live status changes quickly.

The key catalysts are straightforward: whether the match actually starts on schedule, whether it is completed without interruption, and whether either player advances by walkover or retirement rather than by finishing play. Traders should watch official tournament updates and live scoreboards closely, because the contract’s 50-50 fallback can become relevant if the fixture is postponed, abandoned, or left undecided inside the seven-day window.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Figueira Da Foz: Martyna Kubka vs Yeon-Woo Ku on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Kalshi UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi UK triggers a quick verification flow that finishes in minutes.